Dishwashing machine



R. MARX,

DISHWASHING MACHINE Filed Sept.- 30. 1920 2 Sheets-Sheet l K- l I I I I1 I l I I I I I I I I N 25, 1924. g R. MARX DISK-[WASHING MACHINE 7Filed Sept. 30. 1920 2 Sheets-$heet 2v Patented Nov. 25, 1924.

RICHARD MARX, OF PHILADELPHIA, PENNSYLVANIA.

DISHWASBING MACHINE.

Application filed September 30, 1920. Serial No. 418,901.

To all whom it may concern: I Be it known that I, RICHARD Manx, acitizen of the United States, residing in Philadelphia, Pennsylvania,have invented certain new and useful improvements in DishwashingMachines, of which the following is a specification.

One object of my invention is to provide a device involving a novelcombination of parts, particularly designed for washing I dishes andwhich shall be especially characterized by the means for causingcirculation and agitation of the water within the container in which thedishes are placed.

My invention further contemplates a relatively simple, compact andeflicient machine for delivering heated water to and circula-tfied formof bucket.

In the above drawings l represents a sheet metal container,substantially square in plan and having a semi-cylindrical bottomportion. At opposite sides of its two ends, this container has fixed toit a pair of pads or brackets 2 for the reception of vertical framemembers 3 of which there are two at each end. I

At the front and back of the machine the end members are braced byhorizontal cross members 4 and atone end of the machine said end membersare connected by and serve to support a platform 5, constitu ing asupport for an electric motor 6. Atthe opposite end of the machine thevertical supports are braced by a transverse member 5.

The open top'of the container 1 is provided with a cover 7 within whichis mounted a transverse perforated partition 8 constituting with the topof said cover a chamber havin an inlet 9 for the receptionof water.inlet may be connected to a source of supply through a hose or otherpipe and by means of the perforated partition, any incoming water isdistributed so that it falls in a series of drops or streams through theinterior of the casing.

One end of thecasing 1 has fixed to it a flanged bushing 10 riveted to aplate 12 and serving as a support for a fixed s indle 13.

The other header end of said casing has a similar flanged bushing 11fixed in it, which provides a bearing for a second and rotary Spindle14' in line with the spindle 13. These two spindles serve to support astationary carrier or basket 15 formed by a pair of segmental ends 16loosely engaging said spindles 13 and 14 and rigidly connected'by aseries of bars or slats so that they normally hang without rotating withtheir ends 16 spaced away from the ends of the casing 1.

The spindle 13 upon it between the arms 16 and the bushing 10 a spideror wheel frame 17; A second and similar spider 18 is pinned or otherwisefixed to the spindle 14 so as to cohas also loosely mounted operate withsaid first spider in supporting a pair of buckets or scoops 19, whichlatter w1th said spiders 17 and 18 are rotatable in the casing 1. Thesebuckets are preferably formedas flat, laterally elongated, boxes,preferably curved concentrically with the spindles 13 and 14 and open attheir advancing edge, the design of the parts being such that theyrotate between the basket 15 and the adjacent parts or bottom of thecasing. Each' of said scoops isreferably transversely divided by a, numr of artitions 20 into a. series of elongated in ependent chambers, eachhaving 'in its inner side one or more laterally elongated openings 19"over each of which is mounted a Hat inclined plate 19, having one edgeattached to and projecting within the bucket from one edge of-suchopening. At its closed or rear end .eachscoop may in some cases beprovided with a valve 21 preferably of the rotary type, whereby atcertain times said rear end may be opened. For this purpose each of therotary valves has a projecting arm 22 designed to cooperate witha cam 23mounted on the'inside face of one of the heads or ends of the casingadjacent the top thereof so that as each scoop reaches or approaches apredetermined position, usually at the top of its path of movement, saidarm will engage the cam and so rotate the valve as to permit the escapeof the liquid in the scoop e The spindle 14 extends outside of theeasing and has fixed to it a pulley wheel 24,

designedto receive .a belt 25 passing around a second pulley 26; Thelatter is fixed to a shaft or spindle 27 carried in a bearing 27 on theplatformor shelf 5 and also having fixed to it a worm wheel 28 meshingwith a worm 29. on the armature shaft of into a bucket or othercontainer ac;

the motor 6.

The casing 1 adjacent one end has an outlet fitting 30 to which isconnected a valve 31 designed to deliver into a laterally bent spout 2extendedinto position to dischalr e valve 31 while it may be of anydesired c0nstruction, is preferably so made as to re- I burners 36 underand immediately adjacent the bottom of said casing, and support them ontwo suitably formed cross bars 37, preferably carried by the framemembers 4:.

- Said burners'are extended at one end of the casing 1 where they areprovided with fuel controlling valves 38, and are connected to I waterin'the lower part of the casing, it r is filled and begins to dischargesaid water over the dishes in the basket 15 as itswings.

a gas supply main 39. If desired, said burner pipes may be removablyheld to their supporting bars 37 by clamps 41 each held to itscorresponding bar by a bolt 40.

Under conditions of operation'with the valve 31 closed, the dishes to bewashed are placedinthe basket 15 and water with the necessary amount ofsoap, is delivered to the casing through the inlet 9,, beingdistributed'with substantial uniformity to all parts of the casing bythe perforated par.- tition 8.- Thereafter the-burners 36 are sup- Iplied with fuel and lighted and the motor 6 is put in operation so thatthe scoops 19 are rotated in a counter-clockwise direction.

As each of said scoops moves through the toward the top of the casing onthe right hand side thereof. When each scoop reaches what issubstantially its highest position, the cam 13 engages its valveoperating arm 22 and so turns the valve as to cause immediate deliveryfrom the scoop of-all the water still remaining therein, so that this"drops on the dishes from the top of the casing. There is-thus anintermittent fall of water upon the dishes in the basket which isalternately of a more or less violent nature as each scoop moves towardand into its topmost position. A spring 45 operative on each of thevalve arms 42 serves to hold the valves 21 closed except when said. armsare engaged by the cam 23.

The repeated discharge upon the dishes of the highly heated water raisedup by the scoops has been found to very effectually and quickly cleanthem, and after they have been washed for the required time, they may beremoved, the fuel being turned off from the tubes 36 by means of thestop cocks 38 and the pull rod 34 thereafter raised to permit dischargeof the water from the casing.

In order to remove any greasy or other .film which may adhere to theotherwise clean dishes after the above treatment, as well as toeffectually sterilize them, I may leave in the casing a smallquantity,asa quartit all, and allow this to be partly or wholly converted intosteam by continuing the operation of. the burners. Such steameffectually. sterilizes not only the dishes but the casing and itscontained parts, and in addition it condenses to a greater or lessextent on the dishes. Thepure waterso formed in running off, has beenfound to remove the above noted-film and give the dishes a highlypolished appearance.

If desired I may and in some cases refer to substitute a closed end forthe va was 21 in the buckets as shown in Fig. 3 and omit the arms andthecams 23, as I have found that at a speed of about twenty revolutionsper minute, the buckets will then so discharge water from their sideopening or openings 19" and ultimately from their advancing open endsrespectively as to forciof the washing water instead of discharging blyremove foreign material from the dishes I and otherwise effectuallyclean them.

As .a measure of precaution I preferably enclose the pulleys 24 and 26with their connecting belt by a casing 50 and also to some extentenclose the burner tubes by sheet metal plates 51 connected to theburner-sulpporting bars, 37 and to the under side of t e bottom of thecasing 1, thereby forming a heat retaining chamber having outlets 52 atthe upperparts of its opposite sides.

In some cases I have found it desirable to hasten or assistthe-operation of my machine by placing therein a mass of smallbodies,.which when raised with the water in the buckets and more or lessforcibly delivered therefrom, serve to out or break and otherwise removefrom dishes, pots, pans or the like, hardened or solidified pieces ofmaterial. -As typical of such bodies I have successfully used pieces ofa woody nature such as cherry stones, cork in pieces approximatelyone-quarter of an; inch in diameter, coarse saw dust and the like.

I claim:

1. The combination in a dish washing ma- 1 chine of a casing; a pair ofarms rotatably it into chambers each provided with an outlet; means forrotating the arms with said container and a dish holder in the casingpositioned to receive water delivered from the container when this hasbeen moved to the upper part of the casing.

2. The combination in a dish washing machine of a casing; a scoopmounted to rotate on a horizontal axis in said casing and having a valvecontrolled outlet; a dish holder in the casing; andmeans for causingopening of the valve of the scoop to permit discharge of water therefromas ,it moves in the upper part of the casing.

3. The combination iii a dishwashing machine of a casing; at least onescoop rotatably mounted in the casing and having its advancing sideopen; a valve normally closing the opposite s1de of the scoop; a cam forcausing opening of said valve as the scoop moves in the upper part ofthe casvof the holder and movable in an annul ing;and a dishholdermounted in the lower part of the casing; with means for rotating thescoop. v I

4. The combination in a dish washing machine of a casing; means thereinfor hold ing dishes; at least one rotatably mounted bucket in the casinghaving its advancing end open with means dividing said bucket intocompartments, each having at least one opening in its inner side; andmeans for rotating said bucket about the dishes.

5. The combination in a dish washing 'machine of a casing; a dish holdersuspended' at its ends within the casing; arms rotatably mounted atopposite ends of the casing; at least one bucket carried by the armsandconsisting of a flattened container extending for substantially the fullwidth ar space between said holder and the casing, the advancing end ofsaid container being open and there being at least one transverseopening in its inner side; tating the arms with the bucket; and a seriesof vertical partitions dividing the interior of he bucket into chambers.v

' RICHARD MARX.

with means for -ro-

